13947 Williams Rd is a 5,200 square foot house on a 3.76 acre lot with 1 bathroom. - it last sold on June 29, 1987 for $226,240. Based on Redfin's Glen Ellen data, we estimate the home's value is $1,675,795.
Single-familyProperty Type
1940Year Built
3.76 acresLot Size
$322Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,675,795
$1.4M since sold in June 1987$64K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 14.4% higher than the average sale price ($1.46M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jun 11, 2016 • Final
Building history record
Work on an electrical meter.
Electrical
Electric meter
Jun 11, 2016 • Final
Building history record
Work on a retaining wall.
Grading
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Bathroom Information
# of Full Baths: 1
Exterior
Exterior Information
Construction Type: Wood/Steel
Property Information
Building Sq. Ft: 5,200
Legal Description: 99 FM 54-360-04 & PT RD OR 98-118955
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 1,200
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 163,786
Acres: 3.76
County Use Description: RURAL RESID-1 RESID
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: —
Baths: 1.0
Sq. Ft.: 5,200
Stories: —
Lot Size: 3.76 acres
Style: Single Family Residential
Year Built: 1940
Year Renovated: 1940
County: Sonoma County
APN: 054360029000
Home facts updated by county records on Aug 13, 2026
Around this home
Schools
Altimira Middle School
Public 6-8 • Assigned • 3.6mi
2/10
Sonoma Valley High School
Public 9-12 • Assigned • 6.5mi
7/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
4/10 Fire Factor
0.93% chance of being in a wildfire in next 30 years
4/10 Heat Factor
8 days above 96° expected this year, 18 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
10/10 Air Factor
24 unhealthy days expected this year, 24 days in 30 years
Provided by First Street
Historical weather
Glen Ellen, CA • 95442
Average low and high temperatures (°F)
61
41
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70
47
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47
77
51
81
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84
55
88
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83
57
78
52
64
46
58
43
Jan
Feb
Mar
Apr
May
Jun
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Aug
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Sun exposure
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.59M – $1.93M
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